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Svetllana [295]
3 years ago
7

Can you help me solve this?​

Mathematics
2 answers:
Natalka [10]3 years ago
6 0

Answer:

first one is rational, second is also rational, third is rational, fourth is rational, and fifth is irrational.

Step-by-step explanation:

Rational numbers are numbers that can be expressed as a fraction or part of a whole number. (examples: -7, 2/3, 3.75) Irrational numbers are numbers that cannot be expressed as a fraction or ratio of two integers. The reason why \sqrt{12} is an irrational number is bc it's not a perfect square while\sqrt{49} equals to 7 and is a perfect square.

Dahasolnce [82]3 years ago
5 0

Answer:

  1. rational
  2. irrational
  3. rational
  4. rational
  5. irrational

Step-by-step explanation:

<u>Numbers given</u>

6.(32)

  • This is repeat non-terminating number which can be expressed as a fraction, so it is rational

3.121121112...

  • this is non-repeat non-terminating number which can't be expressed as a fraction so it is irrational

√49 = 7

  • This is rational

-27/4

  • This is rational

√12 = 2√3

  • This is not a perfect square and is irrational
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shutvik [7]

Answer:

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Step-by-step explanation:

Let's solve your equation step-by-step.

8+x=−4

Step 1: Simplify both sides of the equation.

x+8=−4

Step 2: Subtract 8 from both sides.

x+8−8=−4−8

x=−12

7 0
3 years ago
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Find the area of the polygon defined by the coordinates (0,-5),(-5,0),(-15,-20),and(-20,-15)
alekssr [168]

Area of the polygon defined by the given points is 62.5 sq units

Step-by-step explanation:

Step 1 :    

Let P be the point (-5,0)  Q = (0,-5), R = (-15,-20) and S = (20,-15)

We have to to find the area of the polygon PQRS

Step 2 :

The area of polygon given the vertices (x(x_{1} ,y_{1} ), (x_{2} ,y_{2})  ... (x_{n} ,y_{n} ) is given by

Area  = mod ( (x_{1} y_{2}  - y_{1}x_{2}) + (x_{2} y_{3}  - y_{2}x_{3}) + ... (x_{n} y_{1}  - y_{n}x_{1}) ) ÷ 2

Where  x_{n} is the vertex n's x coordinate , y_{n} is the vertex n's y coordinate

Substituting the corresponding values ,

Area of PQRS = mod ( (25 - 0)+ (0-75) +(300-300) +( 0-75)  ) ÷ 2

                       = mod (25-75+0-75) ÷ 2

                       = mod (-125) ÷ 2 = 125 ÷ 2 = 62.5 sq units

Step 3 :    

Answer :

Area of the polygon defined by the given points is 62.5 sq units

4 0
3 years ago
Perimeter refers to the distance around 2-D figure and calculate perimeter, add the side lengths of the figure
viva [34]

Answer:

True

Step-by-step explanation:

The perimeter is the combined length of all the side lengths of a figure.

3 0
3 years ago
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2. 24-7p=10
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3x+3=72
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3x+6=48
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3 years ago
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sasho [114]
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6 0
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